They like to be under the edge of something, so if you can set it up where there is a bit of a ledge next to the sand they like that. (posted previously where I said it looks like the rock) The one up in the middle of the rock has a indented hole it just scooted right in and as a section where it is about flat to the rock when it opens.
I really like how responsive they are to the light.
I really like how responsive they are to the light.